[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Help-gsl] Array sorting queries

From: Joseph Wakeling
Subject: [Help-gsl] Array sorting queries
Date: Wed, 22 Oct 2008 10:33:17 +0200
User-agent: Thunderbird (X11/20080925)


A few queries about the sorting functions in GSL.

I have a few different arrays which I need to sort, depending on what
they are, into either ascending or descending order.

Later on in the program, I will need to perform index-sorts on the same
arrays -- again, respectively in either ascending or descending order.

What bothers me is that I don't see, from the GSL manual, how to do this
effectively.  Sorting in ascending order is easy -- just use gsl_sort()
and gsl_sort_index() -- but there's no hint in the manual how to sort
arrays in _descending_ order.

I could of course use gsl_sort_largest() over the whole array but that
means having to assign a separate destination array and seems an
expensive solution...

Can anyone suggest a better solution?  (Apologies if I've missed
something in the manual.)

Thanks & best wishes,

    -- Joe

reply via email to

[Prev in Thread] Current Thread [Next in Thread]